21330024132 has 48 divisors (see below), whose sum is σ = 50318045120. Its totient is φ = 7031826432.

The previous prime is 21330024109. The next prime is 21330024137. The reversal of 21330024132 is 23142003312.

It is a junction number, because it is equal to n+sod(n) for n = 21330024099 and 21330024108.

It is not an unprimeable number, because it can be changed into a prime (21330024137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923219 + ... + 1934277.

Almost surely, 2^21330024132 is an apocalyptic number.

It is an amenable number.

21330024132 is an abundant number, since it is smaller than the sum of its proper divisors (28988020988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21330024132 is a wasteful number, since it uses less digits than its factorization.

21330024132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12820 (or 12818 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21330024132 its reverse (23142003312), we get a palindrome (44472027444).

The spelling of 21330024132 in words is "twenty-one billion, three hundred thirty million, twenty-four thousand, one hundred thirty-two".